Can someone give me a answer of number 1 and 2 and explain by showing how to do it. you

In both cases, you make use of the relationship between the length and width of a rectangle and its area. We take for granted that you are comfortable with arithmetic using mixed numbers and/or fractions. The applicable formula for the area (A) of a rectangle in terms of its length (L) and width (W) is ...

  A = L·W

Fill in the given values and solve for the remaining one.

1.

  3/4 in² = (2/3 in)·W . . . . . divide by the coefficient of W to find W.

  (3/4 in²)/(2/3 in) = W = 9/8 in = 1 1/8 in

2.

  A = (1 1/2 cm)·(3 1/4 cm) = (3/2·13/4) cm² = 39/8 cm²

  A = 4 7/8 cm²

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it